Abstract: A pulsation dampener apparatus and method for dampening pulses within a fluid flow line during well drilling operations. The pulsation dampener apparatus comprises a cylindrical body having an annular chamber, a piston slidably disposed within the annular chamber, a gas column within the annular chamber and a means of communicating pulses from the fluid flow line to the piston. The piston is operated against the gas column to dampen the pulses within the fluid flow line.

Abstract: A battery monitoring/control device includes a monitor/control device (35) that is operable to be integrated with a microprocessor system. The system includes a CPU (12) that interfaces with a data bus (14) and an address bus (16). The CPU (12) interfaces through a data line (40) with the control/monitor device (35) and control lines (28) and (34). Commands and data can be input to the control/monitor circuit (35) and data received therefrom. The control/monitor device (35) includes a controller/data register block (36) and a battery charge control/monitor block (44). The device (35) is operable to monitor the battery voltage of a secondary battery (46) during charging thereof and to control the rate of charge through a transistor (66). The battery monitor (90) determines when the voltage on the battery (46) reaches a predetermined level indicating full-charge.

Abstract: The present invention provides straight forward methods for plasma etching a trench having rounded top corners, or rounded bottom corners, or both in a silicon substrate. A first method for creating a rounded top corner on the etched silicon trench comprises etching both an overlying silicon oxide layer and an upper portion of the silicon substrate during a “break-through” step which immediately precedes the step in which the silicon trench is etched. The plasma feed gas for the break-through step comprises carbon and fluorine. In this method, the photoresist layer used to pattern the etch stack is preferably not removed prior to the break-through etching step. Subsequent to the break-through step, a trench is etched to a desired depth in the silicon substrate using a different plasma feed gas composition.

Abstract: A reconfigurable integrated circuit chip includes an output terminal (42) which is connected to the output of an inverting amplifier (44). The integrated circuit chip (10) includes an output terminal (46) which is connected to one input of a comparator (22). The other end of comparator (22) is connected to an internal voltage reference device (48). The output of comparator (22) is connected to the input of the inverting amplifier (44). The integrated circuit chip (10) may be configured as a linear regulator when a transconductance device (14) is connected between a DC power supply (12) and a load and an integrator (24) is connected between terminal (42) and the control input of the transconductance device (14). The integrated circuit chip (10) is configured as a switching regulator when a gated switch (14) is connected between a DC power supply (12) and a switching node (65) wherein the gated switch (14) is gated by the signal output by the output terminal (42).

Abstract: A three-state input circuit operable to sense three separate logic states on an input pad (10) is operable to sense whether the current is sourced to the pad from a positive source or sinked from the pad to a negative source to provide two logic states. A third logic state is provided when it is determined that current is not being sourced to or sinked from the pad (10). A current source (36) is connected from a positive rail (14) through the source/drain path of an N-channel transistor (40) to the pad (10). This provides a sink current comparator function. A source current comparator function is provided by a current source (42) that is connected to the pad (10) through the source/drain path of a P-channel transistor (46) and to a negative voltage rail (18). The transistor (40) has a first bias voltage V.sub.B1 connected to the gate thereof and the transistor (46) has a second bias voltage V.sub.B2 connected to the gate thereof.

Abstract: Release and lubricating compositions are disclosed for avoiding seizure between molten glass and metal molds for forming glass articles and for improving the quality of glassware produced therefrom, comprising an aqueous dispersion containing polyphenylene sulfide, an inorganic binder, and a solid lubricant. The inorganic binder may be represented by the general formula MPO.sub.4 wherein M is a metal ion selected from the group consisting of aluminum, chromium, magnesium, iron and zinc. The particular solid lubricants include members selected from the group consisting of graphite, molybdenum disulfide, polyterafluorethylene, and mixtures thereof.

Abstract: A cutting tool holder includes an elongated holder body having a first end face through which passes a shaft receiving bore which extends longitudinally through the holder body to receive an elongated tool mounting shaft therein. The tool mounting shaft has an end collar at one end and is threaded at its opposite end to be releasably fastened to the holder body with the shaft extending through the holder body, and the tool mounting portion of the shaft protruding therefrom. A plurality of substantially disc-shaped shaft mounted members, including cutting tools and spacers, have opposite faces and are received in face-to-face relationship on the tool mounting portion of the shaft, between the end collar and the holder body end face. The end collar and each shaft-mounted member is provided with locator means comprising complementary-shaped recesses (holes or grooves) and protrusions (pins or bars) formed, respectively, on the adjacent faces thereof.

Abstract: Release and lubricating compositions are disclosed for avoiding seizure between molten glass and metal molds for forming glass articles and for improving the quality of glassware produced therefrom, comprising an aqueous dispersion containing polyphenylene sulfide, an inorganic binder, and a solid lubricant. The inorganic binder may be represented by the general formula MPO.sub.4 wherein M is a metal ion selected from the group consisting of aluminum, chromium, magnesium, iron and zinc. The particular solid lubricants include members selected from the group consisting of graphite, molybdenum disulfide, polyterafluorethylene, and mixtures thereof.

Abstract: An interchangeable tool mounting device, which is particularly adapted for retaining turret lathe center drills in a desired position, includes an elongated body portion having at least one center drill receiving passage extending inwardly from at least one end thereof. The passage is adapted to receive a standard size center drill and includes a cylindrical portion and a tapered inner end portion of frusto-conical shape. Abutment surfaces or pins are provided in the tool receiving passage, and flutes formed on the center drill abut against the abutting surfaces or pins to position the center drill relative to the mounting device.

Abstract: A cutting tool holder comprising an elongated holder body having a shaft receiving bore extending longitudinally therethrough, an elongated tool mounting shaft adapted to receive at least one cutting tool in a fixed position thereover and means for releasably retaining the mounting shaft in position within the holder body. The holder body is affixed to a metal removal or cutting machine by convenient conventional means with cutting tool positioned relative to a workpiece as desired. The holder may include means which permit a plurality of cutting tools to be simultaneously mounted on the shaft to accommodate the performance of a plurality of metal removal operations. The tool holder may also conveniently include a micrometer-like arrangement between the mounting shaft and holder body to provide indication means as to relative location of the cutting tool from a first normal position and means for supplying a continuous coolant fluid flow to the cutting tool.